78% (1979)

80% (1984)

78% (1957)

70% (1972)

0% (1982)

0% (1986)

84% (1969)

0% (1985)

0% (1988)

0% (1986)

85% (1983)

50% (1961)

70% (1982)

70% (1968)

75% (1979)

100% (1989)

72% (1976)

0% (1973)

83% (1976)

0% (1985)